2005
DOI: 10.1016/j.agee.2005.04.025
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Environmental implications of low nitrogen use efficiency in excessively fertilized hot pepper (Capsicum frutescens L.) cropping systems

Abstract: A randomized-block greenhouse plot experiment was conducted on N utilization efficiency and N losses in intensive hot pepper (Capsicum frutescens L.) production systems typical of commercial practice in Shouguang, an important vegetable production area in Shandong province, northeast China. Crop yield and N utilization, soil mineral N dynamics and potential nitrate leaching losses were studied in control plots receiving no N fertilizer or organic manure and in experimental plots receiving 0, 600, 1200 or 1800 … Show more

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Cited by 203 publications
(116 citation statements)
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“…It was comparable with N fertilization in Valencian Community region areas with intensive agricultural production in Spain, in which nitrogen fertilization in pepper and tomato cropping system could reach to 1030 and 940 kg N ha À1 , respectively (Ramos et al, 2002). Fertilizer N use efficiency in intensively managed greenhouse vegetable systems can be less than 10% using conventional management practices (Zhu et al, 2005), consequently large amounts of unused nitrogen are released to the environment through nitrate leaching, denitrification and NH 3 volatilization (Cabrera et al, 1993;Cabrera and Chiang, 1994;Fox et al, 1996;Gollany et al, 2004;Ramos et al, 2002). For example, nitrate-N concentrations in shallow wells around greenhouses in Huimin, Shandong, ranged from 9 to 274 mg N L À1 , with 99% of surveyed wells exceeding the USEPA limit of 10 mg N L À1 , more than half of the samples (53%) exceeding 50 mg N L À1 , and 26% exceeding 100 mg N L À1 (Ju et al, 2006).…”
Section: Introductionmentioning
confidence: 56%
See 1 more Smart Citation
“…It was comparable with N fertilization in Valencian Community region areas with intensive agricultural production in Spain, in which nitrogen fertilization in pepper and tomato cropping system could reach to 1030 and 940 kg N ha À1 , respectively (Ramos et al, 2002). Fertilizer N use efficiency in intensively managed greenhouse vegetable systems can be less than 10% using conventional management practices (Zhu et al, 2005), consequently large amounts of unused nitrogen are released to the environment through nitrate leaching, denitrification and NH 3 volatilization (Cabrera et al, 1993;Cabrera and Chiang, 1994;Fox et al, 1996;Gollany et al, 2004;Ramos et al, 2002). For example, nitrate-N concentrations in shallow wells around greenhouses in Huimin, Shandong, ranged from 9 to 274 mg N L À1 , with 99% of surveyed wells exceeding the USEPA limit of 10 mg N L À1 , more than half of the samples (53%) exceeding 50 mg N L À1 , and 26% exceeding 100 mg N L À1 (Ju et al, 2006).…”
Section: Introductionmentioning
confidence: 56%
“…N losses in the Nmr treatment readily occurred in the AW seasons because of low N uptake but with the same N supply as in the WS seasons. Zhu et al (2005) reported nitrate leaching was the main route of N loss and accounted for the nearly one-third reduction in N (600 kg N ha À1 ) application rate that was possible instead of the conventional practice (1800 kg N ha À1 ) in hot pepper greenhouse cropping system in Shouguang, Shandong province. Thus, despite the use of best management practices for N application rate and timing, significant losses of nitratenitrogen in drainage discharge continue to occur from cropping systems (Strock et al, 2004).…”
Section: Discussionmentioning
confidence: 99%
“…Recent investigations have revealed that excessive N fertilizer applications with fertilizer N recovery rates of less than 10% are commonly practiced in intensive greenhouse vegetable production systems in northern China (Chen et al 2004;Zhang et al 1996;Zhu et al 2005). Consequently, very high proportions of unused nutrients accumulate in the soil, and N is released into the environment through nitrate leaching, denitrification and NH 3 volatilization (Cabrera and Chiang 1994;Fox et al 1996;Gollany et al 2004;He et al 2007;Ramos et al 2002).…”
Section: Introductionmentioning
confidence: 99%
“…Vegetable crops in general present shallower root systems compared to arable plants. Furthermore, the nitrogen use efficiency (NUE) of many vegetables is often less than 50% and can be as low as 20%, [14,16]. Contrary to arable crops, vegetables are harvested in a vegetative stage when daily N uptake rates are still high, leaving soils with considerable mineral N amounts.…”
Section: Introductionmentioning
confidence: 99%
“…Vegetable production, in particular, requires an intensive use of resources, namely water and fertilizers, in concentrated space and time. Reported N application rates show values as high as 600-900 kg·ha −1 [13][14][15]. Vegetable crops in general present shallower root systems compared to arable plants.…”
Section: Introductionmentioning
confidence: 99%